Hi Krishna,
First of all remember pneumatic testing is not prefered for safety hazards
associated with them. Lot of accidents have occured in past. generally low
pressure lines are tested with air. Theres should be company or engineering
consultant detailed methdology for the same covering all the parameters of
safety.
P*V plays important role, as this is the energy content. Finnaly TNT value is
calculate and length of piping for testing is based on this.
valve seats testing are done pnematically, that does not call for pneumatic
testing of the lines which it is flanged or welded.
Lastly if pneumatic testing is required, Line List will give you all the
neccesary information including pressure, etc.
Normally flare lines are tested by this method. As large flare line with amount
of water makes supporting structure very huge and it`s wastage.
Regards
Hi,
As per ASME B 31.3 the pneumatic test pressure sahll be 110% of line design
pressure.But the valves to be pneumatically tested are tested at max of 7 bar as
per API 598.In this case what will be the test pressure for piping.
Can somone explain.
Thanks & Regards
V.Krishna
Piping
66945816
[Non-text portions of this message have been removed] Received on Tue Jan 09 05:33:00 2007
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